A self-propolled item designed to provide a safe working platform for overhead or overhead and below the ground level installation, inspection, maintenance, repair, or construction operation. A small floored area (working platform) is mounted on articulated booms which may be rotated in any horizontal plane within the limits of the supporting equipment. The booms are cable and/or hydraulically operated and are controlled by mechanism located within the platform and/or on the vehicle. (Excludes MAINTENANCE PLATFORM and SERVICING PLATFORM, TRACTOR MOUNTED.)